/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.geode.redis.internal.executor.hll;

import org.apache.geode.redis.internal.ByteArrayWrapper;
import org.apache.geode.redis.internal.ExecutionHandlerContext;
import org.apache.geode.redis.internal.RedisDataType;
import org.apache.geode.redis.internal.RedisDataTypeMismatchException;
import org.apache.geode.redis.internal.executor.AbstractExecutor;

public abstract class HllExecutor extends AbstractExecutor {
  
  public static final Double DEFAULT_HLL_STD_DEV = 0.081;
  public static final Integer DEFAULT_HLL_DENSE = 18;
  public static final Integer DEFAULT_HLL_SPARSE = 32;
  
  protected final void checkAndSetDataType(ByteArrayWrapper key, ExecutionHandlerContext context) {
    Object oldVal = context.getRegionProvider().metaPutIfAbsent(key, RedisDataType.REDIS_HLL);
    if (oldVal == RedisDataType.REDIS_PROTECTED)
      throw new RedisDataTypeMismatchException("The key name \"" + key + "\" is protected");
    if (oldVal != null && oldVal != RedisDataType.REDIS_HLL)
      throw new RedisDataTypeMismatchException("The key name \"" + key + "\" is already used by a " + oldVal.toString());
  }
}
